[1] LSU Syst, Pennington Biomed Res Ctr, Div Nutr & Chron Dis, Baton Rouge, LA 70808 USA
[2] Ochsner Clin Fdn, Dept Internal Med, Sect Endocrinol Diabet & Metab Dis, New Orleans, LA USA
[3] Tulane Univ, Sch Med, Dept Med, Div Endocrinol, New Orleans, LA 70112 USA